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通过gd库为图片添加透明水印

WBOY
WBOYOriginal
2016-06-13 10:32:161118browse

请查看源文件
注:需GD 2.0以上才能有透明效果
(做为现在的主流开发语言)
header ("Content-type: image/png");
$logoImage = ImageCreateFromPNG(test.png);
$photoImage = ImageCreateFromJpeg(back.jpg);
ImageAlphaBlending($photoImage, true);
$logoW = ImageSX($logoImage);
$logoH = ImageSY($logoImage);
ImageCopy($photoImage, $logoImage, 0, 0, 0, 0, $logoW, $logoH);
ImageJPEG($photoImage); // output to browser
ImageDestroy($photoImage);
ImageDestroy($logoImage);
?>

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